chore: add ci

Author: dy-tea

.github/workflows/ci.yml

@@ -0,0 +1,25 @@
+name: Build
+
+on: [push]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    container:
+      image: archlinux:latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install dependencies
+        run: |
+          pacman -Syu --noconfirm
+          pacman -S --noconfirm base-devel
+
+      - name: Build
+        run: |
+          cd arch/
+
+          # makepkg requires non-root user
+          useradd builder
+          chown -R builder:builder .
+
+          sudo -u builder makepkg -si --noconfirm